IMO 1983 LL ROM55
For every a \inN denote by M(a) the number of elements of
IMO 1983 LL ROM55
Origin: ROM
Problem
For every a \inN denote by M(a) the number of elements of the set {b \inN | a + b is a divisor of ab}. Find maxa\leq1983 M(a).
For every a \inN denote by M(a) the number of elements of
Origin: ROM
For every a \inN denote by M(a) the number of elements of the set {b \inN | a + b is a divisor of ab}. Find maxa\leq1983 M(a).